# Huskies

A story-driven development server that manages work items, spawns coding agents, and runs them through a pipeline from backlog to done. Ships as a single Rust binary with an embedded React frontend. Can also be run in WhatsApp, Matrix, and Slack chats.

## Getting started with Claude Code

1. Download the huskies binary (or build from source — see below). Add it to your $PATH. 

2. From your project directory, scaffold and start the server:

```bash
huskies init --port 3000
```

This creates a `.huskies/` directory with the pipeline structure, `project.toml`, and `.mcp.json`. The `.mcp.json` file lets Claude Code discover huskies' MCP tools automatically.

Huskies also ships an embedded React frontend. Once the server is running, open `http://localhost:3000` to see the pipeline board, agent status, and chat interface.

3. Open a Claude Code session in the same project directory, or visit http://localhost:3000/. 

4. Tell Claude: "help me set up this project with huskies." Claude will walk you through the setup wizard — generating project context, tech stack docs, and test/release scripts. Review each step and confirm or ask to retry.

Once setup is complete, Claude can create stories, start agents, check status, and manage the full pipeline via MCP tools — no commands to memorize.

## Chat transports

Huskies can be controlled via bot commands in **Matrix**, **WhatsApp**, and **Slack**. Configure a transport in `.huskies/bot.toml` — see the example files:

- `.huskies/bot.toml.matrix.example`
- `.huskies/bot.toml.whatsapp-meta.example`
- `.huskies/bot.toml.whatsapp-twilio.example`
- `.huskies/bot.toml.slack.example`

## Prerequisites for building

- Rust (2024 edition)
- Node.js and npm
- Docker (for Linux cross-compilation and container deployment)
- `cross` (`cargo install cross`) optional, for Linux static builds. Only needed if you are building for a different architecture, e.g. if you want to build a Linux binary from a Mac.

You only need these installed if you want to build Huskies yourself. Alternately, you can just download and run the `huskies` binary for your system from https://code.crashlabs.io/crashlabs/huskies/releases

## Building for production

```bash
cargo build --release
```

The release binary embeds the frontend via `rust-embed`. Output: `target/release/huskies`.

For a static Linux binary (musl, zero dynamic deps):

```bash
cross build --release --target x86_64-unknown-linux-musl
```

Docker:

```bash
script/docker_rebuild

# or 

script/docker_restart
```

## Running in development

```bash
# Run tests
script/test

# Run the server
cargo run -- --port 3000

# In another terminal, run the frontend dev server
cd frontend && npm install && npm run dev
```

Configuration lives in `.huskies/project.toml`. See `.huskies/bot.toml.*.example` for transport setup.

## Architecture

Internal architecture documentation lives in [`docs/architecture/`](docs/architecture/):

- [Service module conventions](docs/architecture/service-modules.md) — layout, layering rules, and patterns for `server/src/service/`
- [Future extraction targets](docs/architecture/future-extractions.md) — recommended order for remaining handler extractions

## Releasing

Requires a Gitea API token in `.env` (`GITEA_TOKEN=your_token`).

```bash
script/release 0.7.1
```

This bumps version in `Cargo.toml` and `package.json`, builds macOS arm64 and Linux amd64 binaries, tags the repo, and publishes a Gitea release with changelog and binaries attached.

## Multi-node CRDT sync (rendezvous)

Huskies nodes can replicate pipeline state in real-time over WebSocket.  Add a
`rendezvous` field to `.huskies/project.toml` to configure a peer:

```toml
rendezvous = "ws://other-host:3001/crdt-sync"
```

On startup, this node opens an outbound WebSocket connection to the configured
URL and exchanges CRDT ops bidirectionally.  The connection is fully symmetric:
both sides send a bulk state dump on connect, then stream individual ops as they
are applied locally.

### Reconnect behaviour

If the peer is unreachable on startup (or the connection drops mid-session), the
client retries with exponential backoff starting at 1 s and capping at 30 s.
Failures are logged at **WARN**; after 10 consecutive failures the level escalates
to **ERROR** to surface persistent connectivity problems.

### Deployment topologies

**Peer-to-peer (two nodes pointing at each other):**

```
Node A  ←→  Node B
```

Configure each node with the other's `/crdt-sync` URL.  Both nodes exchange ops
directly.  Supported by this story — ops propagate in both directions and both
nodes converge to the same state.  Works well for two machines collaborating on
the same project.

**Hub-and-spoke (many clients → one central rendezvous):**

```
Client 1 ──┐
Client 2 ──┤── Hub node
Client 3 ──┘
```

Point multiple client nodes at a single "hub" node.  The hub receives ops from
all clients and re-broadcasts them.  Clients do *not* connect to each other —
convergence is mediated through the hub.  The hub itself runs a normal huskies
instance with `rendezvous` unset (it only accepts inbound connections).

> **Caveat:** Hub-to-client relay depends on the hub's `/crdt-sync` inbound
> WebSocket handler re-broadcasting every received op to all other connected
> peers.  That broadcast happens automatically via the shared `SYNC_TX` channel
> (each locally-applied remote op is re-emitted), so hub-and-spoke works today
> but has not been load-tested.  Follow-up work may be needed for large fan-out
> (many spoke clients) to avoid broadcast-channel lag.

## Startup reconcile pass

On startup, after CRDT replay and database initialisation, huskies runs a
**reconcile pass** that compares pipeline state across three sources:

1. **In-memory CRDT** — the primary source of truth, reconstructed from
   `crdt_ops` on startup.
2. **`pipeline_items` table** — a shadow/materialised view written alongside
   CRDT updates, used for fast DB queries.
3. **Filesystem shadows** (`.huskies/work/N_stage/*.md`) — legacy rendering
   still written by some paths and read by agent worktrees.

Any disagreement between these sources is **drift**. The reconcile pass logs a
structured line for each drifted item:

```
[reconcile] DRIFT story=X crdt_stage=Y db_stage=Z fs_stage=W
```

(`MISSING` is used where a source has no record for that story.)

### Drift types

| Type | Meaning |
|------|---------|
| `CRDT-only` | Story present in CRDT but absent from `pipeline_items` |
| `DB-only` | Story present in `pipeline_items` but absent from CRDT |
| `FS-only` | Story on the filesystem but absent from both CRDT and DB |
| `stage-mismatch` | Story present in both CRDT and DB but with different stage values |

Note: a filesystem shadow that lags behind the CRDT/DB stage (both of which
agree) is **not** treated as drift — the FS is a best-effort rendering and is
allowed to lag.

If any drift is detected, the Matrix/Slack/WhatsApp bot startup announcement
includes a count and a suggestion to check the server logs.

### Opt-out

Set `reconcile_on_startup = false` in `.huskies/project.toml` to disable the
pass during the migration window if it produces noise.
## Debugging

### Inspecting the in-memory CRDT state

When diagnosing state issues, use the `dump_crdt` MCP tool or the `/debug/crdt` HTTP endpoint to inspect the raw in-memory CRDT state directly. These surfaces show the ground truth that the running server holds — not a summarised pipeline view and not the persisted SQLite ops.

**MCP tool** (from Claude Code or any MCP client):

```
mcp__huskies__dump_crdt
# dump everything
{}

# restrict to a single item
{"story_id": "42_story_my_feature"}
```

**HTTP endpoint** (browser or curl):

```bash
# dump everything
curl http://localhost:3001/debug/crdt

# restrict to a single item
curl "http://localhost:3001/debug/crdt?story_id=42_story_my_feature"
```

Both return a JSON document with:

- **`metadata`** — `in_memory_state_loaded`, `total_items`, `total_ops_in_list`, `max_seq_in_list`, `persisted_ops_count`, `pending_persist_ops_count`
- **`items`** — one entry per CRDT list item (including tombstoned/deleted entries), each with `story_id`, `stage`, `name`, `agent`, `retry_count`, `blocked`, `depends_on`, `content_index` (hex OpId for cross-referencing with `crdt_ops`), and `is_deleted`

> **This is a debug tool.** For normal pipeline introspection use `get_pipeline_status` or `GET /api/pipeline` instead.

## Source Map

See `.huskies/specs/tech/STACK.md` for the full source map.

GPL-3.0. See [LICENSE](LICENSE).
